42271983818 has 16 divisors (see below), whose sum is σ = 64494468000. Its totient is φ = 20773958832.

The previous prime is 42271983799. The next prime is 42271983821. The reversal of 42271983818 is 81838917224.

It is a self number, because there is not a number n which added to its sum of digits gives 42271983818.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681713 + ... + 741131.

It is an arithmetic number, because the mean of its divisors is an integer number (4030904250).

Almost surely, 2^42271983818 is an apocalyptic number.

42271983818 is a deficient number, since it is larger than the sum of its proper divisors (22222484182).

42271983818 is a wasteful number, since it uses less digits than its factorization.

42271983818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65509.

The product of its digits is 1548288, while the sum is 53.

The spelling of 42271983818 in words is "forty-two billion, two hundred seventy-one million, nine hundred eighty-three thousand, eight hundred eighteen".